Slowing the rate of absorption in sandy soil

[dpa]

I have a problem posed by the local county officials. They are concerned that the soils on a site that is being developed for recycling are too porous and that rain water may pass too quickly into the groundwater for any treatment of contaminants to occur.

1. What is the best way to figure out if this is a problem? Perk test? or other?

2. If this is a problem, how do you slow the rate of absorption?

Thanks,
DPA